HD6413007F20 Datasheet, PDF (205/798 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

No.
CKS2 to CKS0
Write Timing
3
High Low
switchover*³
Old clock source
RTCNT Operation
6. Bus Controller
New clock source
*⁴
RTCNT clock
RTCNT
N
N+1
N+2
4
High High
switchover*⁴
Old clock source
CKS bits rewritten
New clock source
RTCNT clock
RTCNT
N
N+1
N+2
CKS bits rewritten
Notes: 1. Including switchovers from a low clock source to the halted state, and from the halted
state to a low clock source.
2. Including switchover from the halted state to a high clock source.
3. Including switchover from a high clock source to the halted state.
4. The switchover is regarded as a falling edge, causing RTCNT to increment.
6.7 Interrupt Sources
Compare match interrupts (CMI) can be generated when the refresh timer is used as an interval
timer. Compare match interrupt requests are masked/unmasked with the CMIE bit in RTMCSR.
Rev.5.00 Sep. 12, 2007 Page 175 of 764
REJ09B0396-0500